Disclosed is structural low-alloy manganese cast steel having increased hardness and wear resistance, and an article made therefrom. In particular, after carrying out conventional bulk hardening followed by tempering, the disclosed steel has hardness of approximately 418 to 512 HB and is suitable for use in railway engineering, in particular for manufacturing parts of freight car trucks such as a friction wedge. Due to improved hardness and wear resistance of the parts made of the steel according to the present invention, an increase in inter-repair service life, in particular, of the friction wedge/friction plate friction pair is provided without a significant increase in cost for the parts.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
B61F 5/00 - Détails de structure des bogiesLiaisons entre bogies et châssis du véhiculeAménagements ou dispositifs pour ajuster ou permettre l'auto-ajustement des essieux des roues ou des bogies dans les courbes
C22C 38/20 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cuivre
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
2.
RAILWAY COUPLER KNUCKLE AND A METHOD OF ITS MANUFACTURE
Disclosed herein is an improved railway coupler knuckle design and method of manufacture. The railway coupler knuckle has a nose portion, the hub portion, the tail portion and the transition portion that joins them, the signal flag opening in the nose portion, the coupler pivot pin opening in the hub portion connected with the internal cavity made in the transition portion and in the tail portion. Disclosed are improved specifications for thicknesses of transition portions, walls opposite the transition portions. Also disclosed are configurations for platforms areas tail portions in the area of pulling surfaces. Also disclosed is a method of mold positioning and filling to create such knuckle.
B61G 3/06 - Dispositifs de verrouillage de l'articulation
B61G 3/04 - Couplage comprenant des éléments d'accouplement de forme ou de conformation similaire pouvant s'accoupler sans utiliser aucun élément ou éléments additionnels avec une tête d'attelage comportant un bras de garde sur un côté et une articulation avec des parties "nez" et "queue" disposées angulairement, articulées vers l'autre côté du bras, le "nez" de l'articulation étant la partie attelante, et ayant des dispositifs de verrouillage de l'articulation en position d'attelage, p. ex. du type "A.A.R." (A.A.R. = Association of American Railroads) ou "Janney"
3.
UNIVERSAL SYSTEM FOR TRANSPORTING REMOVABLE FREIGHT MODULES
A universal removable freight modules transportation system is configured for railway transportation of removable freight modules, quickly mountable on railway rolling stock and quickly removable from it, of different constructions and intended use in the form of containers, frames, bolsters, on single or articulated flatcars, wherein support bottom pivot bearings, formed as guide bushings and configured to receive mating locating top pivot bearings formed as guide pins in their openings, are used as locating elements. The universal system significantly broadens capabilities of railway rolling stock, 30 dependent claims, 14 drawings.
B61D 3/20 - Wagons de marchandises découverts ou fourgons adaptés au transport de chargements particuliers de conteneurs d'expédition
B61D 45/00 - Moyens ou dispositifs pour arrimer ou maintenir les marchandises y compris la protection contre les chocs
B61D 3/00 - Wagons de marchandises découverts ou fourgons
B61D 3/14 - Véhicules articulés comportant des organes de roulement reliés par les supports du chargement, permettant le transport à un niveau bas de la charge
B60P 7/13 - Fixation des conteneurs d'expédition ou des cadres sur les véhicules
4.
CAST STEEL RAILWAY WHEEL HAVING MARKS AND METHOD FOR CASTING RAILWAY WHEEL HAVING MARKS
The invention relates to the foundry. Casting of a railway wheel is carried out in moulds from cold-hardening mixtures or produced by vacuum-film method Dies having marks are fixed on the casting model bottom or casting top in the casting model areas. The casting model is placed in moulding position, and compaction of moulding sand with transfer of marks is carried out on the mould working surface. The marks thus provided on the cast steel have clear contours and remain visible during the service life the railroad wheel.
The invention relates to metal industry and more particularly to alloy for producing steel wheels for railway transport. The steel comprises following component, in % wt: from 0.45 to 0.60 % of carbon, from 0.38 to 0.50 % of silicon, from 0.80 to 1.00 % of manganese, up to 0.15 % of vanadium, from 0.80 to 1.00 % of chromium, up to 0.02 % of phosphorus, up to 0.015 % of sulfur, up to 0.3 % of cuprum, up to 0.25 % of nickel, up to 0.04 % of aluminum, the balance of iron. The claimed steel alloy for use in producing railway wheels either by metal working process or by casting methods has improved mechanical and operational properties.
The invention relates to foundry operation and may be used for in-mold modification of a metal (steel, crude iron, non-ferrous metals and alloys thereof) in the production of castings. The method includes arranging a modifier (3) in a cavity (1) of a casting mold by attaching it to a surface (1.1) and subsequently filling the casting mold with metal melt. The modifier (3) is arranged by attaching it in places in the cavity (1) of the casting mold which correspond to zones of the casting where zoned modification is necessary, or in places in the cavity (1) of the casting mold arranged upstream of these zones relative to the melt flow direction. Attachment of the modifier (3) to the surface (1.1) of the cavity (1) of the casting mold is possible by means of applying it to a double-sided adhesive tape (2) or spraying it together with an adhesive substance. Improved quality of castings, reduced modifier expenditure, increased casting yield ratio are achieved.
An adapter pad for a railcar-truck side frame (3) is used to protect an adapter support surface "B" from contact interaction with a wheel-pair adapter or adapter pad. The adapter pad comprises a wear-resistant base (1) having bent sidewalls (1.1) and a fixing member made as a flexible carrying plate (4). Making the sidewalls (1.1) bent at bending angles "" relative to the wear-resistant base (1), which are maintained within the range of 40 to 50, simplifies operations of mounting the wear-resistant base (1) on the adapter support surface "B" of the railcar-truck side frame (3), thereby providing reliable location of the wear-resistant base (1) on the adapter support surface "B" of the railcar-truck side frame (3).
A side bearer of a railcar truck is designed to limit reciprocal displacement of a truck and railcar under a frame. The side bearer includes a carrying body with a guiding opening wherein a bearing cup is mounted by applying a springing element. A thrust collar is implemented on a guiding wall in a groove. Upon off-loading the cup e.g., during dismantling of a truck from under a railcar, a thrust collar bears against a limiting face ensuring unreleasable connection of the side bearer. Indicator grooving is implemented on a working face and on a lateral wall of a carrying body, enabling visual control of a side bearer technical condition.
A cast metal railroad car wheel includes a hub section, a tread section, and an uninterrupted annular web extending between and supporting the tread section on the hub section. The web includes a disk-shaped surface that is continuously concave and that does not include a reversely curved portion. A V-process casting process casts railroad wheels using a vacuum-process casting mold with opposing halves each partially filled with unbonded sand and sand-retaining-plastic film and a vacuum application port and that, when positioned together with the unbonded sand held to shape by vacuum and the film, define a cavity shaped to form a railroad car wheel. The V-process includes feeding molten metal into the cavity, cooling the molten metal, and releasing a vacuum to cause the sand to fall away from the railroad car wheel.
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